Bug#912799: doxygen switch to llvm-toolchain-7

[Jiri Palecek <jpalecek@web.de>]

Hello,

On Mon, 3 Dec 2018 12:54:45 +0100 Paolo Greppi wrote:

> Hi, in preparation for this switch I am building doxygen from source with:
>
> sudo apt install llvm-7-dev # for /usr/lib/llvm-7/lib/cmake/llvm/LLVMConfig.cmake
> sudo apt install clang-7 # for /usr/lib/llvm-7/lib/cmake/clang/ClangConfig.cmake
> git clone https://github.com/doxygen/doxygen
> cd doxygen
> mkdir build
> cd build
> LLVM_DIR=/usr/lib/llvm-7/lib/cmake/llvm/ Clang_DIR=/usr/lib/llvm-7/lib/cmake/clang/ cmake -Duse_libclang=ON -G "Unix Makefiles" ..
> make
>
> It builds, but the resulting binary fails to start with:
> ./bin/doxygen
> : CommandLine Error: Option 'help-list' registered more than once!
> LLVM ERROR: inconsistency in registered CommandLine options

I have been able to build the package successfully without this problem by patching the source with the attached llvm-7 patch. That was with release version 1.8.15.

I also needed an updated watch file and an updated no-rpath patch.

I hope to see a new version of doxymacs built against llvm 7 in Debian soon.

Regards

    Jiri Palecek

Index: doxygen-1.8.15/src/CMakeLists.txt
===================================================================
--- doxygen-1.8.15.orig/src/CMakeLists.txt
+++ doxygen-1.8.15/src/CMakeLists.txt
@@ -279,4 +279,6 @@ target_link_libraries(doxygen
     ${CLANG_LIBS}
 )

+set_target_properties(doxygen PROPERTIES SKIP_BUILD_RPATH TRUE)
+
 install(TARGETS doxygen DESTINATION bin)

Index: doxygen-1.8.15/src/CMakeLists.txt
===================================================================
--- doxygen-1.8.15.orig/src/CMakeLists.txt
+++ doxygen-1.8.15/src/CMakeLists.txt
@@ -261,12 +261,13 @@ if (use_libclang)
     endif()
     include_directories(${LLVM_INCLUDE_DIRS})
     add_definitions(${LLVM_DEFINITIONS})
-    llvm_map_components_to_libnames(llvm_libs support core option)
+    llvm_config(doxygen USE_SHARED support core option)
     target_compile_definitions(doxygen PRIVATE ${LLVM_DEFINITIONS})
-    set(CLANG_LIBS libclang clangTooling ${llvm_libs})
+    set(CLANG_LIBS libclang clangTooling)
 endif()

 target_link_libraries(doxygen
+  PRIVATE
     _doxygen
     doxycfg
     qtools